Adobe has issued security patches for Campaign Classic after disclosing multiple critical vulnerabilities affecting the marketing platform. According to the vendor, the flaws could allow arbitrary code execution, privilege escalation and security feature bypass if successfully exploited.

For European businesses that use Campaign Classic as part of their marketing or customer communications stack, this is primarily a patch management and access control issue. A successful compromise of a campaign management platform can have consequences beyond IT, potentially affecting customer data, outbound communications, connected systems and business continuity.

What happened

Adobe said it fixed eight critical vulnerabilities in Campaign Classic. The published details indicate that the issues include risks such as code injection, arbitrary code execution, privilege escalation and security bypass. One of the disclosed vulnerabilities, CVE-2026-104351, was assigned a CVSS score of 9.9 and described as a code injection flaw that could lead to arbitrary code execution.

Based on the available information, Adobe has released patches to remediate the issues. The source material does not independently confirm whether these vulnerabilities were actively exploited in the wild at the time of disclosure, so businesses should treat the announcement as a serious vendor security update requiring assessment and action.

Why it matters for European businesses

Campaign Classic is used for marketing operations, campaign orchestration and customer communications. That makes it a business-critical system in many organisations, especially where the platform is connected to CRM, analytics, identity systems, customer databases or email infrastructure.

If an attacker were able to exploit vulnerabilities of this kind, the impact could extend to several business areas:

• Operational disruption: marketing workflows, scheduled campaigns and customer messaging could be interrupted.
• Security exposure: arbitrary code execution and privilege escalation can increase the likelihood of broader compromise within connected environments.
• Data protection risk: if the platform processes personal data, any compromise could create GDPR-related incident handling obligations depending on the facts of the case.
• Brand and customer trust: unauthorised use of campaign systems could affect outbound communications and damage confidence in customer-facing channels.

For SMEs and mid-market companies, martech platforms are sometimes treated as business tools rather than high-risk infrastructure. This type of vulnerability is a reminder that marketing systems can also become an entry point for attackers, particularly when they hold sensitive customer information or integrate deeply with other systems.

Who may be affected

The most directly affected organisations are businesses running Adobe Campaign Classic in their marketing operations. This may include:

• marketing teams relying on Campaign Classic for customer journeys, email campaigns or audience management
• IT and security teams responsible for Adobe environments, application security and patching
• e-commerce businesses using campaign automation tied to customer accounts or transaction data
• digital agencies or service providers managing Adobe-based marketing systems for clients
• regulated businesses where customer communications platforms are part of a wider compliance and security framework

Organisations with older deployments, complex integrations or slower patch cycles may face greater operational difficulty when applying urgent fixes, even if the vendor has already released patches.

What companies should consider

• Identify exposure: confirm whether your organisation uses Adobe Campaign Classic, including hosted, managed or agency-operated environments.
• Review Adobe guidance: check the vendor's official security bulletin and product-specific remediation instructions before making changes.
• Prioritise patching: treat critical vulnerabilities affecting customer communication platforms as high-priority security updates.
• Assess integrations: review connections to CRM, identity systems, analytics tools, email infrastructure and customer data sources.
• Limit privileged access: reduce administrative exposure and review role assignments where privilege escalation is a concern.
• Monitor for unusual activity: inspect logs and outbound campaign behaviour for signs of unauthorised access or unexpected changes.
• Prepare incident handling steps: if suspicious activity is identified, involve security, IT, legal and data protection stakeholders as appropriate.

For companies operating in regulated environments or processing large volumes of personal data, this is also a reminder to include marketing platforms in vulnerability management, access reviews and incident response planning, rather than treating them as isolated business tools.